Can i produce an espressivo mark (or however you might call it, i mean a

little crescendo sign and a little decrescondo sign being placed above
or

below a note head, similar to an accent or an upbow sign...)??

I know that there is an example with a second silent voice where you
put visaible crescendos along, but those are very difficult to get
centered close around the note head, and since i need some hundreds of
them, i would be very glad about a less key-strokes solution... ;)

That's the only way to do it so far. Patches are appreciated.
Cheers,
- Graham

okay, that's clear an answer.

Where in the source is the accent defined which is created when i type
something like c4-> ??